Porting to HID-Project.h for BMC64 friendly keyboard

[diegov-au]

Hey there - Firstly, thanks for making this sketch. It has been very helpful in terms of resurrecting old C64s. I've managed to port your code to use HID-Project.h which provides a BMC64 friendly keyboard. The only changes required are including the "HID-Project.h" header file and using BootKeyboard.press/release instead of Keyboard.Press. The sketch does require a new keydef mapping file. Happy to share the source files if you're interested in updating your code.